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Christopher Snowhill b8057b7c29 Add support for AVIF album artwork 
Import libavif and libaom, specifically built only for decoding, not
encoding.

Signed-off-by: Christopher Snowhill <kode54@gmail.com>
 		2022-02-16 01:52:51 -08:00
..
include Add support for AVIF album artwork 2022-02-16 01:52:51 -08:00
lib Add support for AVIF album artwork 2022-02-16 01:52:51 -08:00
source Add support for AVIF album artwork 2022-02-16 01:52:51 -08:00
README.md Add support for AVIF album artwork 2022-02-16 01:52:51 -08:00

README.md

These were built from libavif and libaom, from the following repositories:

https://github.com/link-u/libaom - at revision: v2.0.0-586-gdee179da7 https://github.com/AOMediaCodec/libavif - at revision: v0.9.3-43-g380d91a

libaom was built to two separate targets, with the following options:

arch -x86_64 /usr/local/bin/cmake .. -DCMAKE_OSX_ARCHITECTURES="x86_64" -DCMAKE_OSX_DEPLOYMENT_TARGET="10.12" -DCONFIG_AV1_ENCODER=0 -DCONFIG_WEBM_IO=0
make -j8

cmake .. -DCMAKE_OSX_ARCHITECTURES="arm64" -DCMAKE_OSX_DEPLOYMENT_TARGET="11.0" -DCONFIG_AV1_ENCODER=0 -DCONFIG_WEBM_IO=0 -DCONFIG_RUNTIME_CPU_DETECT=0
make -j8

And then they were merged using lipo.

libavif was built with the following:

arch -x86_64 /usr/local/bin/cmake .. -DCMAKE_OSX_ARCHITECTURES="x86_64" -DCMAKE_OSX_DEPLOYMENT_TARGET="10.12" -DAVIF_CODEC_AOM=ON -DBUILD_SHARED_LIBS=OFF
make -j8

cmake .. -DCMAKE_OSX_ARCHITECTURES="arm64" -DCMAKE_OSX_DEPLOYMENT_TARGET="11.0" -DAVIF_CODEC_AOM=ON -DBUILD_SHARED_LIBS=OFF
make -j8

And then they were merged with lipo.

The AVIF decoder contained in the source directory was based on code from the following repository:

https://github.com/dreampiggy/AVIFQuickLook

I updated the code to work with newer libavif.